Tau Neutrino Helicity from $h^{\pm}$ Energy Correlations

Details Tau Neutrino Helicity from $h^{\pm}$ Energy Correlations Tau Neutrino Helicity from $h^{\pm}$ Energy Correlations

1997-01-22

arxiv.org/abs/hep-ex/9701012v1

Phys.Rev.D55:7291-7295,1997

Physics

High Energy Physics

High Energy Physics - Experiment

11 pages, postscript file also available through http://w4.lns.cornell.edu/public/CLNS

Scientific paper

10.1103/PhysRevD.55.7291

We report a measurement of the magnitude of the tau neutrino helicity from tau-pair events taken with the CLEO detector at the CESR electron-positron storage ring. Events in which each tau undergoes the decay tau -> h nu, with h a charged pion or kaon, are analyzed for energy correlations between the daughter hadrons, yielding |xi| = 2*|h_nu| = 1.03 +/- 0.06 +/- 0.04, with the first error statistical and the second systematic.

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